- ESSENTIAL TOOL FOR RC ENTHUSIASTS: The battery tester is a must-have for 4WD remote control car enthusiasts. It enables you to efficiently monitor your vehicle's power status, ensuring optimal performance during use. - COMPREHENSIVE TESTING FUNCTIONALITY: This device is compatible with multiple battery types, including lithium polymer, lithium iron, and lithium ion. It provides critical data on a clear 2.1-inch screen, allowing you to assess your battery's health before every outing. - DETAILED DISPLAY: The 2.1-inch screen showcases vital battery metrics such as total voltage, individual cell voltages, maximum and minimum voltage differences, and remaining capacity percentage. This information helps you make informed decisions about your battery usage. - COMPACT AND PORTABLE: Measuring only 8.3 x 5 cm, this lightweight battery tester easily fits in your pocket or toolkit. Its compact design makes it ideal for on-the-go use at RC events or hobby sessions without sacrificing functionality. - PRACTICAL USE SCENARIOS: 1. Before heading to an RC race, check your battery's health to avoid unexpected disruptions. 2. During practice sessions, monitor voltage levels to ensure consistent performance and prevent battery damage. 3. Use it at home to regularly assess your batteries and prolong their lifespan by avoiding over-discharge. This battery tester combines functionality, portability, and compatibility, making it an essential accessory for maintaining peak performance in your remote control vehicles.